Everything you need to understand+the new storyline at the bottom
*What you need to know*
-Promethians are humans that have been composed into ai/human weapons hence the skull that shows of a human inside the knights
-Composer ship doesnt kill anything. It fired on new phoneix and absorbed humans for weapons. Hence the memories in spartan ops of a human in new phoneix/scientist that was put into a composer machine when they retrieved a promethian knights soul.
-Dr Hasley is headed toward the path of promethians because she was trying to enslave humans with the spartans for any resistance. She is killing the morals of the people the same way the composer made the humans extremely aggressive as knights. Hasley also has a transmission talking about cortona where cortona is human+ai together and has surpassed regular ai rampancy. (mission-crash landing into requiem)
-Flood aren't dead- A gravemind is just a composition of 10,000 bodies. Chief killed the milky way galaxy gravemind. The forerunners planted the halos and they were fired but they only killed flood within galaxy. Flood came from outside the galaxy and controlling the mantle is to be strong enough to keep the infection free from the galaxy and combat it whenever it comes back. The flood have come back and are still in remote locations and can compose a gravemind even if the original is dead. There are other proto graveminds
-Arbiter will be coming back most likely to help the chief and fight maybe even with the diadect as all three against the flood
-The covenant in halo 4 were looking for the diadect and other forerunners as well as librarian to find weapons beyond what they have all made. They are trying to ascend to control the universe. They view the diadect as a god.
-Chief-maybe he'll fight or go crazy. The reclamation they said is just beggining. The diadect might be inside of the chief's mind as a memory that speaks to him. The diadect might also be recomposed somewhere else seeing as the humans from new phoneix were turned into knights somewhere else.
-Forerunners- In the ai terminal, the librarian states only the diadect is the last thing alive in the galaxy. She has the DNA to everything else sprouting up all over the universe, however, more forerunners seems unlikely because they would have to rerise like humans and the covenant which doesn't seem likely because they were inhabiting requiem and all passed away.
-Librarian- I don't know what she is exactly, She indexes everything and the forerunners were trying to stop the flood. This is also the reason for the cold storage map on halo 3 downloadable map. They were housing flood looking to try and cure it.
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this leads to what halo 5+6 will entail- your free to add suggestions
Halo 5-
Chief or infinity will set sail and scout more of the galaxy and halos. They will find more flood eventually and will be trying to understand promethians are humans coming to the realization from spartan ops. Diadects Sphinx will come in next addition of spartan ops or halo 5 campaign. There is a scarab forerunner like weapon in the trailers for next spartan ops series. These next halo games will entail the destruction of the forerunners, combining of the covenant and humans and maybe even the forerunner/diadect to fight the flood. They will discover other forerunner weapons and the flood will take over some of the forerunner weapons leading to a crazy destruction. There will be a new gravemind. Maybe guilty spark or the ai's will reappear and cause more chaos. The spartans will reach class 12 armor which is good enough to combat the flood leading to the end of the halo's trilogy. I could honestly see them developing another trilogy after halo 6 if they decide to either slow this storyline down and fight the flood in one and then the last covenant or sentinals in another. Play spartan ops a few times watch all the episodes and redo the campaign. This storyline all makes sense after you do it and then watch the terminals for the best understanding. The flood are definitley going to make a huge comeback which is what will set the alliances in the next halo's to have the humans become the mantlepiece. I can also bet money the arbiter will return and probably die heroicly seeing as all the halo characters have died in every game. Chief will probably die too in halo 6 annialating all the flood, setting the humans on their path, and giving humanity the top of the classes that the books and wiki define as being overlords of the galaxy probably with the covenant.
